SAF7113 datasheet(14/80 Pages) PHILIPS

14 / 80 page

2000 May 08

Philips Semiconductors

Product speciﬁcation

9-bit video input processor

SAF7113H

• Loop filter chrominance gain control (PAL/NTSC

standards only)

• Loop filter chrominance PLL (only active for PAL/NTSC

standards)

• PAL/SECAM sequence detection, H/2-switch

generation

• Increment generation for DTO1 with divider to generate

stable subcarrier for non-standard signals.

The chrominance comb filter block eliminates crosstalk

between the chrominance channels in accordance with the

PAL standard requirements.

For NTSC colour standards the chrominance comb filter

can be used to eliminate crosstalk from luminance to

chrominance (cross-colour) for vertical structures.

The comb filter can be switched off if desired.

The embedded line delay is also used for SECAM

recombination (cross-over switches).

The resulting signals are fed to the variable Y-delay

compensation and the output interface, which contains the

VPO output formatter and the output control logic,

see Fig.10.

Fig.9 Chrominance filter.

Transfer characteristics of the chrominance low-pass dependent on CHBW[1:0] settings.

handbook, full pagewidth

2.7

−6

−12

−18

−24

−30

−36

−42

−48

−54

0.54

1.08

1.62

2,16

MGD147

(MHz)

(dB)

(1)

(2)

(3)

(4)

(1)

(3)

(2)

(1) CHBW[1:0] = 00.

(2) CHBW[1:0] = 01.

(3) CHBW[1:0] = 10.

(4) CHBW[1:0] = 11.

SAF7113 Datasheet(PDF) 14 Page - NXP Semiconductors

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